Lock.



No. 683,206. Patented Sept. 24, l90l. M. F. HUTCHISON LOOK. A pumm am n.a7. 1000.)

3 (No Model.)

Pzvzns co, wumnuma. wAsumaYo UNITED STATES PATENT MAURICE F.IIUTCI-IISON, OF; FLORIS, VIRGINIA, ASSIGNOR OF ONE-HALF TO RUDOLPHCHARLES EICHBERG, OF ALEXANDRIA, VIRGINIA. l

LOCK.

SEEGIIEIGATION forming part of Letters Patent No. 683,206, datedSeptember 24, 1901.

Application filed December 27, 1900. Serial No. 41,227. (No model.)

T0 (0 whom it may concern.-

Be it known that I, MAURICE F. HUTCHI- SON, a citizen of the UnitedStates, residing at Floris, in the county of Fairfax and State ofVirginia, have invented certain new and useful Improvements in Locks;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention is a lock; and it consists in the novel construction andarrangement of its parts.

My lock is adapted to doors of any kind, also to trunks, boxes, valises,tc.

In the accompanying drawings, Figure 1 is a face view of my invention.Fig. 2 is a longitudinal horizontal sectional view of Fig.

1, out on the line X X. Fig. 3 is a longitudinal vertical sectional viewof Fig. 2, out on the line 3 3. Fig. 4 is a cross-sectional view of myinvention, cut on the line 4 40f Fig. 2. Fig. 5 is an elevation of thekey. Fig. 6 is an end view showing the operative end of the key.

My invention is described as follows:

1 represents the base-plate.

2 represents a short plate to which the baseplate is secured by a hinge,or it may be secured by a staple or other suitable means.

8 represents the door, to which said short plate 2 or staple may besecured. V c

4 represents a box secured to the outer face of the base-plate 1. Thepurpose of this box is to protect one or more pairs of platesprings 5,which operate to lock the lock. These springs may be made in one or twopieces, or there may be one pair of springs situated above the edges ofthe other springs, as shown. (See Fig. 2.) This double con struction ofsprings makes the lock doubly hard to pick. lVhen two pairs of springsare used, they are not so wide as when only one pair is used. At theforward end of box 4 is another box 6, (which may be or may not beintegral with box 4,) which covers an arrowhead 7 and the forward endsof the springs. The arrow-head is secured to the jamb 8 of the door andpasses up through an opening 7 in the forward end of the base-plate 1.Secured to the base-plate and running up through a keyhole 14 in saidbox 4 and through a keyhole 13 in the key-house 9, se- 1 cured on theouter face of box 4, is a pintle 10.

11 represents a hollow key, which is provided with two wings 12. Saidkey is made to enter the outer keyhole 13, cut crosswise through the topface of the key-house 9, and when the wings of said key strike the outerface of box 4 the key is arrested; but there is cut longitudinallythrough the top of box 4 another keyhole 14, (represented in Fig. 1bythe dotted lines 14 and in Fig. 2 byaspace 14,) so that when the keyreaches the top of said box 4 it must be turned one-fourth around beforeit can pass through said second keyhole and before it can unlock thelock. On one of the springs is a shoulder or elevation 15, which arreststhe key when it is turned across the face of the plate 1. When soturned, the springs 5 are pressed sufficiently open to allow thearrow-head to escape from between them. An elevation 15 may be securedto the base-plate, which will perform the same function as saidshoulder. When this lock is secured to trunks, boxes, valises, and thelike, the short plate 2 may be dispensed with, as the lock may besecured to such articles in any suitable manner. A latch 16 is securedto the door in such position that its free end may drop behind one ofthe beards of the arrow-head, and thus latch the door. When it is notdesired to lock the door and when said latch is thus down, the doorcannot be accidently locked. The operation of my lock is very simple.The arrow-head is secured to the jamb of the door or to one side of atrunk, box, valise, or the like and the locking part to the other oropposite side in such position that the locking part will receive thearrow-head in the boxes 4 and 6, when the springs 5 will open and thenclose behind the beards of said arrow-head. To unlock the lock, insertthe key through keyhole 13, turn it one-fourth around and then throughkeyhole 14, and then turn it another fourth around and the springs areopen and the key is arrested by the shoulder or elevation 15 holding thesprings open, so that the arrow-head may be withdrawn from the lock.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

The combination of baserplate '1; a lookcasing secured thereto;plate-springs 5, With- I in said casing; an abutment or shoulder 15, onsaid springs; an arrow-shaped projeetion adapted to enter thelock-casingand beenprovided with a keyhole-slot, and a keyholeslot inthe locking-basing at anangle to the first-nnentioned keyhole-slot,substantially as set forth.

In testimony whereof I affix my signature 15 in presence of twowitnesses.

MAURICE F. HUTCHISON.

gaged by said springs 5; a housing'fo'rmed Witnesses:

on the lock-casing for the arrow-shaped pro- J. E.'LAMBERT, jection; anadditional housing on the casing S. A. TERRY.

